Comparison on in vitro dissolution of Yinhuang Dropping Pills, Yinhuang Granules, and Yinhuang Capsules Comparison on in vitro dissolution of Yinhuang Dropping Pills, Yinhuang Granules, and Yinhuang Capsules Simultaneous determination of seven organic acids and four flavonoids in Yinhuang Granules by HPLC Determination content of baicalin in Yinhuang granules from differentpharmaceutical factories by near-infrared spectroscopy